ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Sep. 30, 2015

Asset Retirement Obligation Disclosure [Abstract]

Analysis of Change in ARO Liability

The following is an analysis of the change in the Company's AROs for the fiscal year ended September 30:

(Thousands)	2015			2014
Balance at October 1	$	30,495		$	28,711
Accretion	2,262			2,012
Additions	2,185			925
Revisions in estimated cash flows	(14,763		)	—
Retirements	(1,034		)	(1,153		)
Balance at period end	$	19,145		$	30,495

Schedule of Future Accretion

Accretion for the next five years is estimated to be as follows:

(Thousands)
Fiscal Year Ended September 30,	Estimated Accretion
2016		$	1,211
2017		1,273
2018		1,340
2019		1,403
2020		1,469
Total		$	6,696